(19)

(11)

EP 2 127 233 A2

(12)

(88) Date of publication A3: 11.12.2008 (43) Date of publication: 02.12.2009 Bulletin 2009/49 (21) Application number: 08737748.7 (22) Date of filing: 29.01.2008

(51) International Patent Classification (IPC):  H04L 12/28(2006.01) (86) International application number: PCT/IB2008/051309 (87) International publication number: WO 2008/093310 (07.08.2008 Gazette 2008/32)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR (30) Priority: 31.01.2007 US 898780 P 27.02.2007 US 712592 (71) Applicant: Alcatel Lucent 75008 Paris (FR)

(72) Inventors: WASHAM, Benjamin Ottawa, Ontario K1B 1C3 (CA) SINHA, Satyam Mountain View, California 94043 (US) ABDOUNI, Bassem M. Mountain View, California 94040 (US) MULEY, Praveen Mountain View, California 94043 (US) GRIGORIU, Tiberiu Ottawa, Ontario K1S 5T3 (CA) TAN, Stephen San Jose, California 95129 (US) RANGANATHAN, Boovaraghavan Mountain View, California 94043 (US) (74) Representative: Hervouet, Sylvie et al Feray Lenne Conseil 39/41, avenue Aristide Briand 92163 Anthony Cedex 92163 Anthony Cedex (FR)